Directional Antenna Directivity Control for Interference Suppression
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Solution Overview
Problem
Current SDMA systems face challenges in efficiently managing interference waves and maintaining stable wireless communication when the direction of a radio wave interference source is close to the connection partner, leading to communication failures and reduced reception sensitivity.
Innovation Solution
A wireless communication device equipped with a directional antenna that performs precise directivity control by narrowing the directivity angle and adjusting the antenna's direction to suppress interference waves, using high-precision detection processes and movement detection to maintain stable communication, even when the connection partner's direction is near the interference source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the directivity angle of the directional antenna is narrowed to suppress interference waves, then the ability to suppress interference is improved, but the reception sensitivity and detection precision deteriorate
Solution Approach 1:
The patent applies dynamics by making the directivity angle of the directional antenna adjustable rather than fixed. The control unit dynamically changes the directivity angle based on the detected direction of the radio wave interference source. When interference is detected, the system narrows the directivity angle to suppress interference waves. When no interference is present, the system widens the directivity angle to maintain reception sensitivity. This dynamic adjustment resolves the contradiction between interference suppression and detection precision.
2Object-affected harmful factors
If the directivity angle is narrowed to improve interference suppression, then the harmful factors are reduced, but the ease of operation and system complexity increase
Solution Approach 1:
The patent implements feedback by using the detection unit to continuously monitor the direction of radio wave interference sources and feeding this information back to the control unit. The control unit then adjusts the directivity angle accordingly. This closed-loop feedback mechanism automates the adjustment process, reducing the need for manual intervention and simplifying operation despite the added complexity of the control system.
Solution Approach 2:
The system applies self-service by automatically detecting interference sources and adjusting its own directivity angle without external control. The detection unit and control unit work together to enable the directional antenna to self-adjust its parameters based on the electromagnetic environment, reducing the need for manual operation and simplifying user interaction.
3Measurement precision
If the detection frequency is increased to improve detection precision, then the measurement precision is improved, but the loss of time and productivity decrease
Solution Approach 1:
The patent applies dynamics by making the detection frequency adjustable based on the operational context. The system performs detection at higher frequencies when interference sources are present or when precision is critical, and reduces detection frequency when the environment is stable and interference-free. This dynamic detection strategy maintains high detection precision when needed while minimizing time loss during normal operation.
Data Source
AI summary
A wireless communication device includes: a directional antenna configured to wirelessly receive data from the wireless communication device which is a connection partner; a processing unit configured to perform a first detection process of controlling a directivity direction of the directional antenna and detecting a first direction which is a direction of a radio wave generation source other than the wireless communication device and a second detection process of controlling the directivity direction of the directional antenna and detecting a second direction which is a direction of the wireless communication device; and a control unit configured to set a directivity angle of the directional antenna to a narrower angle when the second detection process is performed by setting the directivity direction of the directional antenna in a vicinity of the first direction.